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# encoding: utf-8
require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
describe "create_stamp before any page is added" do
it "should work with the font class" do
@pdf = Prawn::Document.new(:skip_page_creation => true)
# If anything goes wrong, Prawn::Errors::NotOnPage will be raised
@pdf.create_stamp("my_stamp") do
@pdf.font.height
end
end
it "should work with setting color" do
@pdf = Prawn::Document.new(:skip_page_creation => true)
# If anything goes wrong, Prawn::Errors::NotOnPage will be raised
@pdf.create_stamp("my_stamp") do
@pdf.fill_color = 'ff0000'
end
end
end
describe "#stamp_at" do
it "should work" do
create_pdf
@pdf.create_stamp("MyStamp")
@pdf.stamp_at("MyStamp", [100, 200])
# I had modified PDF::Inspector::XObject to receive the
# invoke_xobject message and count the number of times it was
# called, but it was only called once, so I reverted checking the
# output with a regular expression
expect(@pdf.render).to match(/\/Stamp1 Do.*?/m)
end
end
describe "Document with a stamp" do
it "should raise_error NameTaken error when attempt to create stamp " \
"with same name as an existing stamp" do
create_pdf
@pdf.create_stamp("MyStamp")
expect {
@pdf.create_stamp("MyStamp")
}.to raise_error(Prawn::Errors::NameTaken)
end
it "should raise_error InvalidName error when attempt to create " \
"stamp with a blank name" do
create_pdf
expect {
@pdf.create_stamp("")
}.to raise_error(Prawn::Errors::InvalidName)
end
it "a new XObject should be defined for each stamp created" do
create_pdf
@pdf.create_stamp("MyStamp")
@pdf.create_stamp("AnotherStamp")
@pdf.stamp("MyStamp")
@pdf.stamp("AnotherStamp")
inspector = PDF::Inspector::XObject.analyze(@pdf.render)
xobjects = inspector.page_xobjects.last
expect(xobjects.length).to eq(2)
end
it "calling stamp with a name that does not match an existing stamp " \
"should raise_error UndefinedObjectName" do
create_pdf
@pdf.create_stamp("MyStamp")
expect {
@pdf.stamp("OtherStamp")
}.to raise_error(Prawn::Errors::UndefinedObjectName)
end
it "stamp should be drawn into the document each time stamp is called" do
create_pdf
@pdf.create_stamp("MyStamp")
@pdf.stamp("MyStamp")
@pdf.stamp("MyStamp")
@pdf.stamp("MyStamp")
# I had modified PDF::Inspector::XObject to receive the
# invoke_xobject message and count the number of times it was
# called, but it was only called once, so I reverted checking the
# output with a regular expression
expect(@pdf.render).to match(/(\/Stamp1 Do.*?){3}/m)
end
it "stamp should render clickable links" do
create_pdf
@pdf.create_stamp 'bar' do
@pdf.text '<b>Prawn</b> <link href="http://github.com">GitHub</link>', inline_format: true
end
@pdf.stamp 'bar'
output = @pdf.render
objects = output.split("endobj")
objects.each do |obj|
if obj =~ /\/Type \/Page$/
# The page object must contain the annotation reference
# to render a clickable link
expect(obj).to match(/^\/Annots \[\d \d .\]$/)
end
end
end
it "resources added during stamp creation should be added to the " \
"stamp XObject, not the page" do
create_pdf
@pdf.create_stamp("MyStamp") do
@pdf.transparent(0.5) { @pdf.circle([100, 100], 10) }
end
@pdf.stamp("MyStamp")
# Inspector::XObject does not give information about resources, so
# resorting to string matching
output = @pdf.render
objects = output.split("endobj")
objects.each do |object|
if object =~ /\/Type \/Page$/
expect(object).not_to match(/\/ExtGState/)
elsif object =~ /\/Type \/XObject$/
expect(object).to match(/\/ExtGState/)
end
end
end
it "stamp stream should be wrapped in a graphic state" do
create_pdf
@pdf.create_stamp("MyStamp") do
@pdf.text "This should have a 'q' before it and a 'Q' after it"
end
@pdf.stamp("MyStamp")
stamps = PDF::Inspector::XObject.analyze(@pdf.render)
expect(stamps.xobject_streams[:Stamp1].data.chomp).to match(/q(.|\s)*Q\Z/)
end
it "should not add to the page graphic state stack " do
create_pdf
expect(@pdf.state.page.stack.stack.size).to eq(1)
@pdf.create_stamp("MyStamp") do
@pdf.save_graphics_state
@pdf.save_graphics_state
@pdf.save_graphics_state
@pdf.text "This should have a 'q' before it and a 'Q' after it"
@pdf.restore_graphics_state
end
expect(@pdf.state.page.stack.stack.size).to eq(1)
end
it "should be able to change fill and stroke colors within the stamp stream" do
create_pdf
@pdf.create_stamp("MyStamp") do
@pdf.fill_color(100, 100, 20, 0)
@pdf.stroke_color(100, 100, 20, 0)
end
@pdf.stamp("MyStamp")
stamps = PDF::Inspector::XObject.analyze(@pdf.render)
stamp_stream = stamps.xobject_streams[:Stamp1].data
expect(stamp_stream).to include("/DeviceCMYK cs\n1.000 1.000 0.200 0.000 scn")
expect(stamp_stream).to include("/DeviceCMYK CS\n1.000 1.000 0.200 0.000 SCN")
end
it "should save the color space even when same as current page color space" do
create_pdf
@pdf.stroke_color(100, 100, 20, 0)
@pdf.create_stamp("MyStamp") do
@pdf.stroke_color(100, 100, 20, 0)
end
@pdf.stamp("MyStamp")
stamps = PDF::Inspector::XObject.analyze(@pdf.render)
stamp_stream = stamps.xobject_streams[:Stamp1].data
expect(stamp_stream).to include("/DeviceCMYK CS\n1.000 1.000 0.200 0.000 SCN")
end
end
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